Definitions
1.verbTo become covered by a scab or scabs.
2.verbTo form into scabs and be shed, as damaged or diseased skin.
3.verbTo remove part of a surface (from).
4.verbTo act as a strikebreaker.
5.verbTo beg (for), to cadge or bum."I scabbed some money off a friend."
6.adjectiveAffected or covered with scabs.
7.adjective(by extension) Vile; worthless.